create table file_board(
	file_no number primary key,
	file_title varchar2(100) not null,
	file_content varchar2(2000) not null,
	file_writer varchar2(50) not null,
	file_date date not null,
	file_count number not null,
	file_filename varchar2(50)
)

drop table file_board;

create sequence file_board_seq;
drop sequence file_board_seq;

insert into file_board values(file_board_seq.nextval,'test file upload','test...','java',sysdate,0,null);

select * from file_board;

update file_board set file_title='수정', file_content='수정', file_filename='' where file_no=4